I've had it since June 30th and I'm still on the mother****ing water temple, it's so difficult!
I never played it originally cos I was born the year it came out, and I'm a really new fan to the series but this was the perfect game to reel me into the series. The detail and clever challenges are what I like the most.
EDIT: I think when you get to Zora's Domain that's Inside Jabu-Jabu's belly. You're still a child at this point if I recall correctly.